Modeling of Downhole Weight on Bit Using Finite Element Method and Its Verification. (February 2019)

• Record Type: Journal Article
• Authors: Wu, Zebing; Guo, Longlong; Zhang, Shuai; Wu, Yuanping; Lv, Lantao; Wang, Wenjuan; Pan, Yujie; Wang, Yongyong; Mokhtari, Adnane El
• Is Part Of: IOP conference series. Volume 234(2019)
• Publication Date: 2019-02
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/234/1/012072
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: During the drilling process of oil and gas well, drag and torque play a very important role in designing configuration of the well, diagnosing drilling states, and optimizing operations. Because of the drag between the drillstring and wellbore, the actual downhole weight on bit (DWOB) is unknown, especially for the horizontal well. In this study, a 3D finite element model was developed to calculate friction factor and DWOB. To validate the rationality of the developed finite element model, simulated data was compared with that of measured. The result indicates that the simulated data shows a good match with the measured data with average accuracy as high as 90%. It is concluded that the developed finite element model is reasonable and can be used to calculate and predict the friction factor and DWOB with high accuracy.